/*-
 * #%L
 * HAPI FHIR - Docs
 * %%
 * Copyright (C) 2014 - 2025 Smile CDR, Inc.
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */
package ca.uhn.hapi.fhir.docs;

import ca.uhn.fhir.context.FhirContext;
import ca.uhn.fhir.rest.client.api.IGenericClient;
import org.hl7.fhir.r4.model.Bundle;
import org.hl7.fhir.r4.model.Composition;
import org.hl7.fhir.r4.model.Observation;
import org.hl7.fhir.r4.model.Parameters;
import org.hl7.fhir.r4.model.Patient;
import org.hl7.fhir.r4.model.Reference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class CreateCompositionAndGenerateDocument {

	private static final Logger ourLog = LoggerFactory.getLogger(CreateCompositionAndGenerateDocument.class);

	public static void main(String[] args) {

		// START SNIPPET: CreateCompositionAndGenerateDocument
		FhirContext ctx = FhirContext.forR4();
		IGenericClient client = ctx.newRestfulGenericClient("http://hapi.fhir.org/baseR4");

		Patient patient = new Patient();
		patient.setId("PATIENT-ABC");
		patient.setActive(true);
		client.update().resource(patient).execute();

		Observation observation = new Observation();
		observation.setId("OBSERVATION-ABC");
		observation.setSubject(new Reference("Patient/PATIENT-ABC"));
		observation.setStatus(Observation.ObservationStatus.FINAL);
		client.update().resource(observation).execute();

		Composition composition = new Composition();
		composition.setId("COMPOSITION-ABC");
		composition.setSubject(new Reference("Patient/PATIENT-ABC"));
		composition.addSection().setFocus(new Reference("Observation/OBSERVATION-ABC"));
		client.update().resource(composition).execute();

		Bundle document = client.operation()
				.onInstance("Composition/COMPOSITION-ABC")
				.named("$document")
				.withNoParameters(Parameters.class)
				.returnResourceType(Bundle.class)
				.execute();

		ourLog.debug(
				"Document bundle: {}", ctx.newJsonParser().setPrettyPrint(true).encodeResourceToString(document));
		// END SNIPPET: CreateCompositionAndGenerateDocument

	}
}
